Table of Contents
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1. INTRODUCTION ...............................7
1.1 Purpose .................................................. 7
1.2 Regulatory Information............................ 7
1.3 ABBREVIATION ..................................... 9
2. PERFORMANCE .............................11
2.1 H/W Features.........................................11
2.2 Technical specification...........................12
3. TECHNICAL BRIEF ........................19
Block diagram... .....................................19
Introduction ............................................20
3.3 Power management IC ..........................28
3.4 Power ON/OFF ......................................32
3.5 SIM interface..........................................33
3.7 Memory ..................................................35
3.8 LCD Display ...........................................36
3.9 Keypad Switching & Scanning ...............39
3.10 Touch KEY...........................................41
3.11 Keypad back-light illumination .............43
3.12 LCD back light illumination...................44
3.13 ISP(Image Signal Processor)...............45
3.14 JTAG & ETM interface connector ........46
3.15 Audiot ...................................................47
3.16 Charging circuit ....................................49
3.17 BLUETOOTH .......................................50
3.18 FM Radio .............................................52
connector .............................................53
3.20 General Description .............................55
3.21 Receiver part........................................57
3.22 Transmitter part....................................58
3.23 RF synthesizer .....................................59
3.24 DCXO...................................................60
3.25 Front End Module control.....................60
3.26 Power Amplifier Module .......................61
4. PCB layout......................................62
4.1 Main PCB component placement ..........62
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Only for training and service purposes
Table Of Contents
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5. Trouble shooting............................66
5.1 Trouble shooting test setup....................66
5.2 Power on Trouble...................................67
5.3 Charging trouble ....................................70
5.4 LCD display trouble................................72
5.5 Camera Trouble .....................................74
5.6 Receiver & Speaker trouble ...................76
5.7 Microphone trouble ................................78
5.8 Ear-MIc Jack Detection trouble..............79
5.9 Vibrator trouble ......................................80
5.10 Keypad back light trouble.....................82
5.11 SIM & USD trouble...............................84
5.12 Touch trouble .......................................88
5.13 Qwerty Key trouble ..............................90
6. Download & S/W upgrade...............103
6.1 S/W download setup ............................103
6.2 Download program user guide.............104
6.3 Multi-Download Program Setting .........105
7. CIRCUIT DIAGRAM ......................107
8. BGM PIN MAP...............................117
9. PCB LAYOUT ................................121
10. RF Calibration ............................127
10.1 Test Equipment Setup .......................127
10.2 Calibration Step .................................127
11. Stand-alone Test ........................133
11.1 Test Program Setting .........................133
11.2 Tx Test ...............................................135
11.3 Rx Test...............................................136
12. ENGINEERING MODE ................137
REPLACEMENT PART LIST ......139
13.1 Exploded View ...................................139
13.2 Replacement Parts ............................141
LGE Internal Use Only
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Table of Contents
Troubleshooting
